WESTERN DIGITAL CORP

Evaluation of Disclosure Controls and Procedures

As required by Rule 13a-15(b) promulgated by the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), we carried out an evaluation, under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures (as such term is defined in Rule 13a-15(e) under the Exchange Act) as of the end of the period covered by this Quarterly Report on Form 10-Q. Based on that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that, as of the end of the period covered by this Quarterly Report on Form 10-Q, our disclosure controls and procedures were effective.

Changes in Internal Controls over Financial Reporting

There has been no change in our internal control over financial reporting during the quarter ended October 3, 2025, that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

PART II. OTHER INFORMATION

See Note 14, Legal Proceedings of the Notes to Condensed Consolidated Financial Statements included in this Quarterly Report on Form 10-Q for disclosures regarding certain legal proceedings, which are incorporated by reference herein.